提高DSTATCOM工作稳定性的研究

分析了影响配电用静止无功补偿器(DSTATCOM)工作稳定性的若干干扰因素。提出了硬件和软件2方面的抗干扰措施。硬件措施包含匹配缓冲电路参数、合理处理地线、对重要信号进行隔离等。软件措施包括数字滤波、设置看门狗定时时钟及程序陷阱等。给出了样机采用抗干扰技术前后的大量实验波形,并分析了各种抗干扰技术的作用和效果。实验证明,所采用的抗干扰技术增强了DSTATCOM的抗干扰能力,提高了其工作稳定性。

Research on improvement of DSTATCOM stability

Some interference factors affecting the stability of DSTATCOM(Distribution STATic var COMpensator)are analyzed.The corresponding anti-interference techniques are provided in both hardware and software.The hardware anti-interference techniques include the matching of snubber circuit parameters,correct earthing and insulation of some important signals.The software techniques include digital filtering,watchdog timer and program trap setting.By comparing the waveforms with or without anti-interference measures,the effect of each anti-interference technique is analyzed.The experimental result shows that,the methods applied enhance the anti-interference ability of DSTATCOM and improves its working stability.